The amylase you have used works best at 37ºC, but is it universally true?What do you know of temperature regulation in different animals? (is there any? How does it work?...)So what is the average temperature of a fish? a Bacteria? a human? a snake? What is the consequence on the optimal temperature of function for their enzyme?

Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)